Little bit of an appreciative thread, I went into the Knox store today in Dallas as my battery hasn't been lasting as long as I thought it should or did in the past. 9 months old mac, 200 charge cycles and battery health was at 92%. Went in for a genius appointment, and he found that at this rate of use it would be out of spec (80%) before it reach 1000 charge cycles. They got me in and out in under an hour and change with my battery replaced in store. So i'm glad my warranty got me a new battery. That is all. I use my mac daily, for at least 10 hours each day btw. EDIT: now that I think about it, how do I make sure I got an 09 battery or one of the new '10 batteries?